Improvement in treating fish and animal matters to obtain oils



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WILLIAM. J, HOOPER AND THEODORE HOQPER. or BALTIMORE, MAR-Y- 7 L ND.

Letters Patent lvo. 99,896, dated February 15, 1870.

menovznmnnr In TREATING- r-rsn Ann ANIMAL MATTERS TO OBTAIN 011.5, rue-rs The Schedule referred toin thes e Letters Patent and making part of the nine.

To all whom it may concern:

Be it known that we, WILLIAM J. 'HOOPER and THEODORE Hooran, of the city and county of Baltimore, and State of Maryland, have invented an Improved-Process for Treating Fish and Animal -Matter to Obtain Oils and Fats and Fertilizers; and we do hereby declare that the following is a correct description thereof. g

This invention consists in treating fislrand anima'l substances for rendering 0r separating their oils-and tats and obtaining fertilizers from said fish and animal substances in vacuum pans or suitable apparatus where a vacuum or partial vacuum may be formed by means of a vacuum-producing apparatus or steam-ejectors, and allowing heated air to pass into such pans or apparatus where the vacuum or partial vacuum is made for the purpose hereafter more l'ul'ly specified;

In order to enable those skilled in the art to apply our invention we Will proceed to describe the process The fish or animal matter-is placed in pans orot-her suitable apparatus wherein a vacuum or partial vacuum may be made by any of the well-known applications for that purpose.

The vacuum-producing apparatus is kept working, and at the same time hot air or other gases are allowed to pass into said apparatus.

The hot air by this process will more efiectually come in contact with the substance placed in the ap- I paratus, thereby causing more rapidly and thoroughly the rendering .of' the oils or fats, and at the same time eliminating the water and desiceating the substance. i

be-found to be of a superior quality.

When a snificient quantity of oils orfats has been v extracted from said substances the solid portion is also, ground or otherwise taken out of the apparatus and pr'epared for a fertilizer.

We well know that it has been proposed to treat -fish, and the rendering of fats and making fertilizers from animal substances by treating said fish andanimal substances in vacuum or partial vacuum, in connection with hot air or other gases, substantially in the manner and for the purpose as herein set forth.

. WILLIAM J. HOOPER.

THEODORE HOOPER.

Witnesses:

ORAZIO LUGO, JOSEPH MCLAUGHLIN.

The oils and fats thus rendered are collected and will 

